Image slicing

[aspquestion]

Hello
I have an image that I will slice to smaller parts.
The slice tool allows me to only draw straight lines.
For some reason, I need to slice the image by drawing on it and without the use of straight lines. I will draw many curves
How can I do this?
Thank you

[haoyunu99]

A pinch valve is a full bore or fully ported type of control valve which presents no obstruction to flow passage. There are a few types of pinch valves based upon application.Pinch valves used for fluids usually employ a device that directly contacts process tubing. Forcing the tubing togethor will create a seal that is equivalent to the tubing's permeability.